電容(rong)觸摸(mo)屏的(de)(de)漂移(yi)問(wen)題。在(zai)(zai)觸摸(mo)屏產品中，電容(rong)觸摸(mo)屏是(shi)(shi)我們(men)常用(yong)的(de)(de)觸摸(mo)屏方式，那(nei)么，對(dui)于(yu)電容(rong)觸摸(mo)屏來說，其(qi)產品本身應用(yong)比較廣(guang)泛，但是(shi)(shi)也存在(zai)(zai)著不少問(wen)題。而且由于(yu)現(xian)在(zai)(zai)科技(ji)的(de)(de)發展(zhan)程度還無法完全解決觸摸(mo)屏產品在(zai)(zai)相(xiang)關原理上出現(xian)的(de)(de)問(wen)題，所以對(dui)于(yu)這些問(wen)題，目(mu)前(qian)還是(shi)(shi)普遍存在(zai)(zai)的(de)(de)。
在這里武漢公司要跟大家討(tao)論的(de)(de)(de)(de)是(shi)關于電(dian)容(rong)觸(chu)(chu)摸(mo)屏的(de)(de)(de)(de)"漂(piao)移"問題，這個問題比較常見，也是(shi)我們在解決產(chan)品問題時主要考慮的(de)(de)(de)(de)方面。 電(dian)容(rong)觸(chu)(chu)摸(mo)屏的(de)(de)(de)(de)漂(piao)移問題介紹！ 武漢觸(chu)(chu)摸(mo)屏公司提示，電(dian)容(rong)觸(chu)(chu)摸(mo)屏本身(shen)實際是(shi)一套精密的(de)(de)(de)(de)漏電(dian)傳感器，帶手套的(de)(de)(de)(de)手不(bu)能觸(chu)(chu)摸(mo)，由于使用(yong)電(dian)容(rong)方式，導致有漂(piao)移現象。電(dian)容(rong)觸(chu)(chu)摸(mo)屏和電(dian)阻觸(chu)(chu)摸(mo)屏都(dou)是(shi)電(dian)原理工作方式，電(dian)工作方式對于多(duo)點(dian)(dian)觸(chu)(chu)摸(mo)，不(bu)管是(shi)多(duo)少點(dian)(dian)，也不(bu)管是(shi)連續(xu)的(de)(de)(de)(de)還是(shi)不(bu)連續(xu)的(de)(de)(de)(de)都(dou)是(shi)取多(duo)點(dian)(dian)觸(chu)(chu)摸(mo)的(de)(de)(de)(de)中(zhong)心點(dian)(dian)判斷，因為電(dian)流疊加(jia)是(shi)分(fen)不(bu)出來誰(shui)是(shi)誰(shui)的(de)(de)(de)(de)，沒有辦法。
但是(shi)，目(mu)前(qian)來(lai)(lai)說(shuo)，電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)摸(mo)屏(ping)(ping)(ping)仍然(ran)有不(bu)少問(wen)題(ti)存在。武漢公司信為(wei)，觸(chu)摸(mo)屏(ping)(ping)(ping)目(mu)前(qian)的(de)(de)(de)(de)(de)透明導(dao)電(dian)(dian)(dian)(dian)(dian)材(cai)(cai)料(liao)(liao)ITO--氧(yang)化金屬非常脆(cui)弱，觸(chu)摸(mo)幾下(xia)就會損壞(huai)，還(huan)不(bu)能直(zhi)(zhi)接用(yong)(yong)(yong)來(lai)(lai)作工作層。材(cai)(cai)料(liao)(liao)的(de)(de)(de)(de)(de)問(wen)題(ti)一時還(huan)難以(yi)解(jie)決(jue)，只(zhi)好委曲(qu)求(qiu)(qiu)全：在外(wai)部增加一層非常薄的(de)(de)(de)(de)(de)堅硬玻璃(li)，它顯(xian)然(ran)是(shi)不(bu)能導(dao)電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)，直(zhi)(zhi)流(liu)(liu)是(shi)不(bu)行了，改用(yong)(yong)(yong)高(gao)頻交(jiao)流(liu)(liu)信號，靠人(ren)的(de)(de)(de)(de)(de)手指頭(tou)（隔著薄玻璃(li)）與工作面形成(cheng)的(de)(de)(de)(de)(de)耦合(he)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)來(lai)(lai)吸(xi)走一個交(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，這(zhe)(zhe)就是(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)"名字的(de)(de)(de)(de)(de)由來(lai)(lai)。 電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)摸(mo)屏(ping)(ping)(ping)之所以(yi)出現"漂移"的(de)(de)(de)(de)(de)問(wen)題(ti)，是(shi)因為(wei)耦合(he)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)(de)方(fang)(fang)式是(shi)不(bu)穩定的(de)(de)(de)(de)(de)，它直(zhi)(zhi)接受(shou)溫度(du)、濕度(du)、手指濕潤(run)程度(du)、人(ren)體(ti)體(ti)重、地面干燥程度(du)影(ying)(ying)響，受(shou)外(wai)界大(da)面積物體(ti)的(de)(de)(de)(de)(de)干擾(rao)也(ye)(ye)非常大(da)，帶來(lai)(lai)了不(bu)穩定的(de)(de)(de)(de)(de)結果，這(zhe)(zhe)些都(dou)直(zhi)(zhi)接違背(bei)了作為(wei)觸(chu)摸(mo)屏(ping)(ping)(ping)這(zhe)(zhe)種(zhong)(zhong)坐標(biao)系統的(de)(de)(de)(de)(de)基(ji)本要(yao)求(qiu)(qiu)，不(bu)可(ke)避免的(de)(de)(de)(de)(de)要(yao)產生(sheng)漂移，有的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)摸(mo)屏(ping)(ping)(ping)欲求(qiu)(qiu)通過25點(dian)(dian)校(xiao)(xiao)準(zhun)法甚(shen)至96點(dian)(dian)校(xiao)(xiao)準(zhun)法來(lai)(lai)解(jie)決(jue)漂移問(wen)題(ti)，其實(shi)是(shi)不(bu)可(ke)能的(de)(de)(de)(de)(de)，漂移是(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)工作的(de)(de)(de)(de)(de)這(zhe)(zhe)種(zhong)(zhong)方(fang)(fang)式決(jue)定的(de)(de)(de)(de)(de)，即使(shi)是(shi)在控制器的(de)(de)(de)(de)(de)單(dan)片程序(xu)上利用(yong)(yong)(yong)動態計算和經驗值查(cha)表，也(ye)(ye)只(zhi)能是(shi)治(zhi)標(biao)不(bu)治(zhi)本。 其實(shi)，多點(dian)(dian)校(xiao)(xiao)準(zhun)法最早是(shi)大(da)屏(ping)(ping)(ping)幕投(tou)影(ying)(ying)觸(chu)摸(mo)板(ban)使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)(de)方(fang)(fang)法，目(mu)的(de)(de)(de)(de)(de)是(shi)消(xiao)除坐標(biao)對應(ying)的(de)(de)(de)(de)(de)線xing失真，電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)摸(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)線xing失真也(ye)(ye)非常厲害，主(zhu)要(yao)是(shi)因為(wei)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)計算建立在四個電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)量與觸(chu)摸(mo)點(dian)(dian)到四個電(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)距(ju)離成(cheng)比例的(de)(de)(de)(de)(de)理想狀態上，實(shi)際由于(yu)受(shou)環境電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、線路寄生(sheng)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)和不(bu)同人(ren)使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)(de)影(ying)(ying)響。
